Synthesis and Characterization of Technetium-99m-Labeled Tropanes as Dopamine Transporter-Imaging Agents
作者:Sanath K. Meegalla、Karl Plössl、Mei-Ping Kung、Sumalee Chumpradit、D. Andrew Stevenson、Steven A. Kushner、William T. McElgin、P. David Mozley、Hank F. Kung
DOI:10.1021/jm960532j
日期:1997.1.1
striatal/cerebellar (ST/ CB) ratio reached 2.8 at 60 min after an iv injection. The specific uptake in rat brain can be blocked by pretreating rats with a competing dopamine transporter binding agent, beta-CIT (RTI-55, 2 beta-carbomethoxy-3 beta-(4-iodophenyl)tropane; iv, 1 mg/kg), which reduced the regional brain uptake ratio (ST/CB) to 1.2. In contrast, the specific striatal uptake was not affected by pretreating
在开发新型Tc-99m标记的托烷衍生物作为多巴胺转运蛋白(再摄取位点)成像剂时,一系列含有中性和亲脂性的复合物,其中双-(氨基乙硫醇)作为[99mTc] TcO3 +中心核的中性复合部分。准备成功。据报道,Tc-99m标记的复合物13-16作为中枢神经系统(CNS)多巴胺转运蛋白成像剂的生物学评估。通过添加两个氨基乙硫醇单元的逐步反应,可以合成托烷衍生物。通过用Hg(OAc)2使4-甲氧基苄基保护基解封以获得三氟乙酸盐,从而获得最终的游离硫醇配体。除16种化合物外,所有Tc-99m复合物在多巴胺转运蛋白集中的纹状体区域均表现出良好的初始大脑摄取和选择性摄取。化合物之一,[2-[[2-[[[3-(4-氯苯基)-8-甲基-8-氮杂双环[3.2.1]辛-2-基]甲基](2-巯基乙基)氨基] [etheth] amino] ethanethiolato-(3-)-N2,N2',S2,S2'] oxo-